I currently have a Hayward pro series sand filter. Model number S244T. It says on the label that the GPM filtration rate is 20. I have a 35,000 gallon pool and according to my calculations if I ran my filter 24/7 my GPM would be approx 25. Which is do run it 24/7 mainly because I'm trying to get in clear. So my question is: Is this pump not really filtering my pool effectively or too small of a filter than what I actually need?